Roller side bearing.



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E. H. SCHMIDT. ROLLER SIDE BEARING.

APPLICATION FILED FEB. 21. I914. 1 1% 8511 m Patented July 6, 1915.

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Patented July 6, 1915.

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ERNEST I-I. SCHMIDT, OF CLEVELAND, OHIO, ASSIGNO R .TO THE NATIONAL MAL LEABLE GASTINGS COMPANY, .OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

ROLLER srnn BEARING.

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Specification of Lenersratent.

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'zfipplication filed'February 21,1914. Serial No QZOJII.

To all whom it "may concern:

Be it known that I, Ennnsr H. SCHMIDT, a citizen of the United States, residing at Cleveland, Cuyahoga county, Ohio, have invented new and useful Improvements in Roller Side Bearingaof which the following is a specification, reference being had to the accompanying drawings, in which- Figure 1. is a section of my improved bearing; Fig. 2 is a bottom. plan viewand Fig. 3 isan end'elevationthereof, partly in section; Figs. l and 5 show respectively a section and end elevation, partly in section, of a modified form of my device, and Figs. '6, 7 and 8 *show a further modified form in side elevation, partly in section, in bottom "plan view and in section.

My invention relates to side bearings intended to be mounted between the body bolster and the truck bolster, and is comprised of roller bearings constructed and mounted inthe 'manner'whieh I shall hereinafter describe and claim.

Referring to the drawings, 2 indicates a container which is preferably bolted or otherwise secured to the underside of the body bolster. The container has apertures 3 in its end walls 4 for receptionof a bolt or rod 5 which may be secured therein by any suitable meansfor instance, the bolt or rod '5 may have a headed end 6 and its other end may be threaded for the reception of a nut 7, as shown. Seated upon the bolt 5 is a centering spring 8, which at either end bears against an upward extension or arm 9 of one of the roller "centering devices 10, through apertures 11 of which the bolt 5 passes. Each roller centering device 10 is comprised of a horizontal portion 12, the

arm 9, which is seated on the bolt 5 and against which the spring 8 bears, as just described, and a downwardiycurved extension 13 which takes about the central or journal portion 14: connecting the rollers 15. The centering devices 10 are preferably so shaped that they lie closely against each other in their horizontal portions 12 and are widened out at their downward extensions 13, to afford a bearing upon the full width of the journal 14. The rollers 15 are preferably cylindrical in form and are adapted to roll upon suitable surfaces on the upper sides of the truck bolster. The container 2 is provided with hardened wearing plates 16, which maybe riveted or otherwise secured to the container and which comprise bearing surfaces for the rollers 15. The depending portions '17 of the end walls 1 aot'as stops to limit the fore and aft movement of the rollers 15.

The device is assembled by placing the spring 8 and the centering devices 10 in'the position shown and by holding them in such position *by the insertion of the bolt or rod 5. The downwardly-curved extensions 13 are f then pulled apart by throwing tension on the springS sufliciently to permit the insertion between them of the roller journal 14:. The extensions 18 are then released and :tlie'spring 8, which is preferably under initial compression, will then return the devices 1O =to1the1posi=tion shown in Fig. 1 and will thus hold the roll ers from dropping out ofzplace. The side walls 18 ofthe container and the extensions 13 hold the rollers 15 in position and against transverse movement, while longitudinal movement of the rollers is permitted to the extent provided between the stops 17, which movementis resisted by the spring 8, which is compressed by the displacement of one or the other of the centering arms 9. When the limit of movemerit is reached the rollers 15 strike the hearing wall 17 at either end of the container, which prevents further abnormal movement of 'the roller.

In Figs. 1 and 5 I have shown a modified form of my device, in which the rollers 15 are made :asseparate parts, to each of which is cast one-half of the journal portion 14: and which are securedtogether by means of the pin 19. No additional securing means is necessary, since both rollers 15' and the pin 19 are held from disengagement by the sides 18 of the container which overlap the side faces of the rollers and the ends of the pin. As the rollers 15 travel on the arc of a circle, each of-the rollers by this construc tion is permitted an independent movement to compensate for the different distances they are to travel.

In Figs. 6,7 and 8 I have shown a further modification of my invention, in which the rollers 20 and 21 and the journal portion between the rollers are made integral, as is shown in Figs. 1, 2 and 3, but the rollers themselves are made conical in shape by reason of the fact that each roller is traveling on the arc of a circle, and as the roller nearer the center of motion (in this case the roller 20) has less distance to travel in its rolling movement than the roller Which is more remote from the center of motion (in this case the roller 21), the roller 20 is made smaller than the roller 21. The container 22 is made curved to supply the necessary curved path in which the roller must travel. As is shown inFig. 8, the axis upon which the rollers rotate is necessarily inclined'with reference to the horizontal upper surface of the container 22, so that the lower surfaces of the roller which contact with the body bolster will lie in a horizontal plane.

Various modifications may be made in the devices which I have shown and described herewith without departing from my invention.

What I claim is: 1. In a roller side bearing, a container, a roller having a journal, a spring, and a plurality of independently and oppositely movable arms, each arm engaging the journal of the roller and one end of the spring and being adapted to transmit pressure from the spring to the roller to center it in one direction.

2. In a roller side bearing arranged to move longitudinally and comprising a support, a rod positioned in said support and a spring on the rod, a pair of separately movable arms, each arm having at one end a bearing upon a roller device and at the other enda bearing for the spring, one arm holding the roller device against movement in one direction by compression of the spring, and the other arm holding the roller device against movement in the opposite direction by compression of the spring in the opposite direction.

' 3. In a roller bearing, a roller mounted therein, a pair of separate arms independently and. oppositely movable, engaging a bearing secured'to a roller,-and a spring having a bearing upon each arm and cooperating with each arm to hold theroller yieldingly against fore and aft movement Copies of this patent may be obtained for five cents each, by addressing the and being adapted to return the roller normally to central position.

4. A roller side bearing having a roller, a spring, and a plurality of arms, each of said arms forming-an operative connection between one end of said spring and the roller, one arm moving with the roller and against the compression of one end of the spring in one direction, and another arm moving with the roller and against the compression of the other end of the spring in another direction, one arm being held sta tionary while theother arm is in motion.

5. A roller side bearing having a roller, a spring, and a pair of arms, said arms having hook-shaped ends and being disposed in substantially parallel relation, one hook on each arm being operatively connected to the roller, and the other hooks of said arms being operatively connected with opposite ends of said spring.

6. In a roller side bearing, a container, roller mechanism operating in a substantially longitudinal direction within said container, a spring in said container, adjacent said roller mechanism and disposed substantially parallel to its line of rolling movement, and independently and oppositely movable operative connections between the ends of said spring and the roller mechanism.

7. In a roller side bearing, a container having a track, a roller operating along said track, a spring within said container, mounted upon a rod substantially parallel with the line of movement of said roller, and a pair of independently and oppositely movable arms disposed substantially parallel to said spring and overlapping each other, hook-shaped inner ends on said arms having an operative engagement with said roller, and upturned outer ends of said arms forming followers engaging opposite ends of the spring.

ERNEST H. SCHMIDT;

' Witnesses:

HARRY E. ORR, Huenn'r L. Srnncn.

Commissioner of Patents,

Washington, I). G. 

